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524 pp.
| Candlewick |
May, 2018 |
TradeISBN 978-0-7636-5472-6$18.99
(3)
4-6
The series concludes in this sixth entry with code-cracking super-agent Ruby in search of a traitor within Spectrum's ranks. The familiar supporting cast is here to help, but another child spy may play an integral part in the mystery. Ruby is in top form, solving ingenious puzzles, performing impossible physical feats, and amassing clues to discover the solution. An exciting and satisfying finale for fans.